我是Android应用程序开发的新手，我最近下载并安装了Android 3.1平台（API 12） .

我正在阅读教程，我正在尝试运行'Hello world'程序（http://developer.android.com/resources/tutorials/hello-world.html）

但它不起作用，我最终看到模拟器上的锁定屏幕 . 当我尝试解锁时，它会显示“强制关闭”错误消息和按钮 .

我通过这个论坛寻找答案，并检查了LogCat输出 . 我在那里发现了一个例外，但我不确定如何解决这个问题 . 有人可以帮帮我吗？

Exception stack trace:

WARN/ResourceType(162): Failure getting entry for 0x7f030015 (t=2 e=21) in package 0 (error -75)
DEBUG/AndroidRuntime(162): Shutting down VM
WARN/dalvikvm(162): threadid=1: thread exiting with uncaught exception (group=0x40014760)
ERROR/AndroidRuntime(162): FATAL EXCEPTION: main
ERROR/AndroidRuntime(162): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.android.launcher/com.android.launcher2.Launcher}: android.content.res.Resources$NotFoundException: Resource ID #0x7f030015
ERROR/AndroidRuntime(162):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1748)
ERROR/AndroidRuntime(162):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1764)
ERROR/AndroidRuntime(162):     at android.app.ActivityThread.access$1500(ActivityThread.java:122)
ERROR/AndroidRuntime(162):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1002)
ERROR/AndroidRuntime(162):     at android.os.Handler.dispatchMessage(Handler.java:99)
ERROR/AndroidRuntime(162):     at android.os.Looper.loop(Looper.java:132)
ERROR/AndroidRuntime(162):     at android.app.ActivityThread.main(ActivityThread.java:4025)
ERROR/AndroidRuntime(162):     at java.lang.reflect.Method.invokeNative(Native Method)
ERROR/AndroidRuntime(162):     at java.lang.reflect.Method.invoke(Method.java:491)
ERROR/AndroidRuntime(162):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
ERROR/AndroidRuntime(162):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
ERROR/AndroidRuntime(162):     at dalvik.system.NativeStart.main(Native Method)
ERROR/AndroidRuntime(162): Caused by: android.content.res.Resources$NotFoundException: Resource ID #0x7f030015
ERROR/AndroidRuntime(162):     at android.content.res.Resources.getValue(Resources.java:1014)
ERROR/AndroidRuntime(162):     at android.content.res.Resources.loadXmlResourceParser(Resources.java:2039)
ERROR/AndroidRuntime(162):     at android.content.res.Resources.getLayout(Resources.java:853)
ERROR/AndroidRuntime(162):     at android.view.LayoutInflater.inflate(LayoutInflater.java:389)
ERROR/AndroidRuntime(162):     at android.view.LayoutInflater.inflate(LayoutInflater.java:347)
ERROR/AndroidRuntime(162):     at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:223)
ERROR/AndroidRuntime(162):     at android.app.Activity.setContentView(Activity.java:1780)
ERROR/AndroidRuntime(162):     at com.android.launcher2.Launcher.onCreate(Launcher.java:336)
ERROR/AndroidRuntime(162):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1048)
ERROR/AndroidRuntime(162):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1712)
ERROR/AndroidRuntime(162):     ... 11 more
WARN/dalvikvm(162): threadid=3: spin on suspend #1 threadid=10 (pcf=0)

Hello World program:

package com.example.helloandroid;

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;

public class HelloAndroid extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        TextView tv = new TextView(this);
        tv.setText(R.string.hello);
        setContentView(tv);
    }
}

layout/main.xml:

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/textview"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:text="@string/hello" />

谢谢Keerthi

android